Medium-HardJava CoreMultiple Choice
Which collection should you use for thread-safe key-value operations?
— Tests your understanding of this concept.
Answer Options
AHashMap
BHashtable
CConcurrentHashMap
DLinkedHashMap
Want to see the correct answer?
Get the answer with a detailed explanation, plus practice 20+ more Java Core questions with adaptive quizzes and timed interviews.
See the Answer on Guru Sishya →This question is from the Java Core topic (Programming Languages).
More Java Core Questions
What is the output of: String a = "hello"; String b = "hello"; System.out.println(a == b);
HardWhich collection provides O(1) average-case time for get(), put(), and containsKey()?
HardWhat happens when you call stream() operations without a terminal operation?
HardWhich keyword ensures a field is NOT serialized when using Java object serialization?
HardWhat is the primary difference between synchronized methods and volatile fields?
Hard